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A platform for research: civil engineering, architecture and urbanism
Intercalation of poly(ethylene-oxides) in montmorillonite: Tailor-made nanocontainers for drug delivery systems
AbstractThe present research investigated the intercalation of three different polymers, namely polyethylene-glycol (PEG) 1500 and 4000, and BRIJ78 into STx-1 montmorillonite. Samples of modified montmorillonite were prepared starting from different initial concentrations in solution (C0) ranging from 20 to 180mM. The basal spacing of the modified clay minerals was related to the amounts of polymer intercalated, estimated by COD (Chemical Oxygen Demand) analysis of the residual amounts in solution. The correlation between the basal spacings of the modified montmorillonites and the amounts of polymers intercalated allowed properly modulating the microstructural characteristics of organo-clay minerals prepared with polymers.
Research Highlights►Quantification of intercalated PEOs and BRIJ78 in montmorillonite by COD. ►Use of monomeric units to compare intercalation of PEOs with different molar mass. ►Correlation between d001 and intercalated PEOs. ►A priori” modulation of the interlayer-space size.
Intercalation of poly(ethylene-oxides) in montmorillonite: Tailor-made nanocontainers for drug delivery systems
AbstractThe present research investigated the intercalation of three different polymers, namely polyethylene-glycol (PEG) 1500 and 4000, and BRIJ78 into STx-1 montmorillonite. Samples of modified montmorillonite were prepared starting from different initial concentrations in solution (C0) ranging from 20 to 180mM. The basal spacing of the modified clay minerals was related to the amounts of polymer intercalated, estimated by COD (Chemical Oxygen Demand) analysis of the residual amounts in solution. The correlation between the basal spacings of the modified montmorillonites and the amounts of polymers intercalated allowed properly modulating the microstructural characteristics of organo-clay minerals prepared with polymers.
Research Highlights►Quantification of intercalated PEOs and BRIJ78 in montmorillonite by COD. ►Use of monomeric units to compare intercalation of PEOs with different molar mass. ►Correlation between d001 and intercalated PEOs. ►A priori” modulation of the interlayer-space size.
Intercalation of poly(ethylene-oxides) in montmorillonite: Tailor-made nanocontainers for drug delivery systems
Zampori, Luca (author) / Stampino, Paola Gallo (author) / Cristiani, Cinzia (author) / Cazzola, Paolo (author) / Dotelli, Giovanni (author)
Applied Clay Science ; 50 ; 266-270
2010-08-04
5 pages
Article (Journal)
Electronic Resource
English
Organoclay , COD , Intercalation , PEG , PEO , Drug delivery
Intercalation behavior of poly(ethylene glycol) in organically modified montmorillonite
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